./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:52,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:52,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:52,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:52,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:52,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:52,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:52,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:52,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:52,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:52,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:52,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:52,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:52,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:52,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:52,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:52,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:52,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:52,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:52,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:52,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:52,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:52,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:52,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:52,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:52,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:52,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:52,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:52,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:52,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:52,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:52,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:52,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:52,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:52,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:52,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:52,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:52,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:52,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:52,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:52,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:52,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:51:52,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:52,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:52,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:52,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:52,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:52,676 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:52,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:51:52,677 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:52,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:52,677 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:51:52,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:51:52,679 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:52,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:51:52,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:51:52,680 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:51:52,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:52,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:52,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:52,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:52,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:52,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:52,682 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:52,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:52,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:52,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:52,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:52,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:52,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:52,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:52,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:52,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:52,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:51:52,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:51:52,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:52,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:52,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:52,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-07 01:51:53,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:53,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:53,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:53,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:53,070 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:53,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-07 01:51:53,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/810d14101/e603d6c188ee4f2db20fde7c32b92aab/FLAG4aa7cf8e3 [2021-11-07 01:51:54,052 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:54,053 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-07 01:51:54,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/810d14101/e603d6c188ee4f2db20fde7c32b92aab/FLAG4aa7cf8e3 [2021-11-07 01:51:54,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/810d14101/e603d6c188ee4f2db20fde7c32b92aab [2021-11-07 01:51:54,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:54,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:54,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:54,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:54,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:54,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:54" (1/1) ... [2021-11-07 01:51:54,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d911695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:54, skipping insertion in model container [2021-11-07 01:51:54,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:54" (1/1) ... [2021-11-07 01:51:54,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:54,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:55,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-07 01:51:55,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-07 01:51:55,059 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:51:55,076 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:51:55,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,888 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:55,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:51:56,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:51:56,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:51:56,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:51:56,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:51:56,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:51:56,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:51:56,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:51:56,203 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:51:56,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:51:56,208 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:51:56,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:56,350 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:51:56,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b49ba06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:56, skipping insertion in model container [2021-11-07 01:51:56,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:56,351 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:51:56,354 INFO L168 Benchmark]: Toolchain (without parser) took 1798.13 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 55.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:56,355 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:56,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1795.26 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 55.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:56,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1795.26 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 55.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5917]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:58,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:58,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:58,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:58,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:58,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:58,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:58,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:58,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:58,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:58,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:58,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:58,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:58,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:58,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:58,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:58,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:58,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:58,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:58,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:58,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:58,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:58,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:58,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:58,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:58,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:58,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:58,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:58,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:58,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:58,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:58,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:58,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:58,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:58,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:58,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:58,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:58,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:58,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:58,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:58,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:58,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:51:58,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:58,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:58,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:58,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:58,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:58,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:58,937 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:58,937 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:58,938 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:58,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:58,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:58,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:51:58,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:58,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:51:58,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:58,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:51:58,945 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:51:58,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:51:58,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:58,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:51:58,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:58,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:51:58,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:58,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:58,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:58,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:58,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:51:58,948 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:51:58,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:58,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:51:58,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:58,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:58,950 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-07 01:51:59,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:59,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:59,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:59,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:59,406 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:59,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-07 01:51:59,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/a392cf78f/589ff662297c48a8a815ab3f5d148026/FLAG35ac267db [2021-11-07 01:52:00,596 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:52:00,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-07 01:52:00,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/a392cf78f/589ff662297c48a8a815ab3f5d148026/FLAG35ac267db [2021-11-07 01:52:01,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/data/a392cf78f/589ff662297c48a8a815ab3f5d148026 [2021-11-07 01:52:01,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:52:01,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:52:01,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:01,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:52:01,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:52:01,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413d6502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:01, skipping insertion in model container [2021-11-07 01:52:01,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:01" (1/1) ... [2021-11-07 01:52:01,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:52:01,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:01,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-07 01:52:01,506 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-07 01:52:01,535 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:52:01,549 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:52:02,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,402 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,426 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,436 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:02,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:52:02,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:52:02,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:52:02,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:52:02,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:52:02,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:52:02,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:52:02,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:52:02,769 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:52:02,770 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:52:02,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:02,898 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:52:02,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:02,930 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-07 01:52:02,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-07 01:52:02,933 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:52:02,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:52:03,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,031 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,032 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:52:03,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:52:03,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:52:03,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:52:03,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:52:03,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:52:03,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:52:03,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:52:03,074 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:52:03,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:52:03,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:03,115 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:52:03,132 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-07 01:52:03,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-07 01:52:03,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:52:03,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:52:03,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,237 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:52:03,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:52:03,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:52:03,265 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:52:03,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:52:03,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:52:03,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:52:03,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:52:03,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:52:03,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:52:03,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:52:03,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:03,594 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:52:03,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03 WrapperNode [2021-11-07 01:52:03,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:03,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:03,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:52:03,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:52:03,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:03,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:52:03,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:52:03,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:52:03,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:52:03,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:52:03,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:52:03,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:52:03,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (1/1) ... [2021-11-07 01:52:03,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:52:03,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:03,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:52:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:52:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:52:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:52:04,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:52:04,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:52:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:52:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:52:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:52:04,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:52:04,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:52:05,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:52:05,612 INFO L299 CfgBuilder]: Removed 37 assume(true) statements. [2021-11-07 01:52:05,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:05 BoogieIcfgContainer [2021-11-07 01:52:05,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:52:05,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:52:05,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:52:05,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:52:05,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:01" (1/3) ... [2021-11-07 01:52:05,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b108b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:05, skipping insertion in model container [2021-11-07 01:52:05,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:03" (2/3) ... [2021-11-07 01:52:05,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b108b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:05, skipping insertion in model container [2021-11-07 01:52:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:05" (3/3) ... [2021-11-07 01:52:05,631 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2021-11-07 01:52:05,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:52:05,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:52:05,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:52:05,709 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:52:05,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:52:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 56 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:52:05,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:05,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:05,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash 696751054, now seen corresponding path program 1 times [2021-11-07 01:52:05,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:05,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747499629] [2021-11-07 01:52:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:05,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:05,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:05,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:52:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:06,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:52:06,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:06,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:06,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:06,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747499629] [2021-11-07 01:52:06,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747499629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:06,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:06,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:52:06,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986425679] [2021-11-07 01:52:06,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:52:06,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:52:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:52:06,521 INFO L87 Difference]: Start difference. First operand has 57 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 56 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:06,545 INFO L93 Difference]: Finished difference Result 110 states and 154 transitions. [2021-11-07 01:52:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:52:06,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 01:52:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:06,557 INFO L225 Difference]: With dead ends: 110 [2021-11-07 01:52:06,558 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 01:52:06,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:52:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 01:52:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 01:52:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-11-07 01:52:06,604 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 40 [2021-11-07 01:52:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:06,605 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-11-07 01:52:06,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-11-07 01:52:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:52:06,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:06,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:06,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,828 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:06,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1268023626, now seen corresponding path program 1 times [2021-11-07 01:52:06,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:06,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210437138] [2021-11-07 01:52:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:06,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:06,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:52:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:07,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:52:07,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:07,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:07,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:07,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210437138] [2021-11-07 01:52:07,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210437138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:07,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:07,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:52:07,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253965142] [2021-11-07 01:52:07,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:52:07,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:52:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:07,409 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:07,480 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-11-07 01:52:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:52:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 01:52:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:07,482 INFO L225 Difference]: With dead ends: 101 [2021-11-07 01:52:07,482 INFO L226 Difference]: Without dead ends: 54 [2021-11-07 01:52:07,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-07 01:52:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-07 01:52:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-11-07 01:52:07,491 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2021-11-07 01:52:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-11-07 01:52:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-11-07 01:52:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:52:07,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:07,494 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:07,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:52:07,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:07,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1187192526, now seen corresponding path program 1 times [2021-11-07 01:52:07,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:07,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373735165] [2021-11-07 01:52:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:07,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:07,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:07,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:52:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:08,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:08,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:08,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:08,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:08,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373735165] [2021-11-07 01:52:08,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373735165] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:08,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [818194927] [2021-11-07 01:52:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:08,424 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:08,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:08,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:08,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:52:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:08,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:52:08,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:08,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:09,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [818194927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:09,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:52:09,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 8] imperfect sequences [5, 5] total 14 [2021-11-07 01:52:09,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833835903] [2021-11-07 01:52:09,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:52:09,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:52:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:52:09,618 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:09,832 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2021-11-07 01:52:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:52:09,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:52:09,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:09,836 INFO L225 Difference]: With dead ends: 92 [2021-11-07 01:52:09,836 INFO L226 Difference]: Without dead ends: 67 [2021-11-07 01:52:09,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:52:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-07 01:52:09,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-11-07 01:52:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.171875) internal successors, (75), 65 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-11-07 01:52:09,846 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 44 [2021-11-07 01:52:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:09,846 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-11-07 01:52:09,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-11-07 01:52:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:52:09,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:09,849 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:09,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:10,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:10,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:10,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash -587814836, now seen corresponding path program 1 times [2021-11-07 01:52:10,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:10,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336532338] [2021-11-07 01:52:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:10,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:10,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:10,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:52:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:10,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:10,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:10,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:10,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336532338] [2021-11-07 01:52:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336532338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:10,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1285442622] [2021-11-07 01:52:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:10,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:10,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:52:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:11,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:11,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:11,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:11,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1285442622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:11,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426072266] [2021-11-07 01:52:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:11,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:11,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:11,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:52:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:12,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:52:12,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:12,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:13,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426072266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:13,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:52:13,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5, 5, 5] total 17 [2021-11-07 01:52:13,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72845305] [2021-11-07 01:52:13,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:52:13,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:52:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:52:13,038 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:13,895 INFO L93 Difference]: Finished difference Result 191 states and 216 transitions. [2021-11-07 01:52:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:52:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:52:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:13,899 INFO L225 Difference]: With dead ends: 191 [2021-11-07 01:52:13,899 INFO L226 Difference]: Without dead ends: 164 [2021-11-07 01:52:13,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:52:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-07 01:52:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 78. [2021-11-07 01:52:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-11-07 01:52:13,923 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 44 [2021-11-07 01:52:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:13,924 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-11-07 01:52:13,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-11-07 01:52:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:52:13,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:13,929 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:13,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:14,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-07 01:52:14,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:14,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:14,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2018208718, now seen corresponding path program 1 times [2021-11-07 01:52:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:14,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908185090] [2021-11-07 01:52:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:14,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:14,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:14,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:14,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:52:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:14,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:14,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:15,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:15,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:15,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908185090] [2021-11-07 01:52:15,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908185090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:15,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846709417] [2021-11-07 01:52:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:15,333 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:15,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:15,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:15,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:52:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:16,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:16,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:16,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846709417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:16,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346061831] [2021-11-07 01:52:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:16,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:16,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:16,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:52:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:16,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:52:16,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:52:18,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346061831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:18,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:52:18,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5, 5, 5, 5] total 21 [2021-11-07 01:52:18,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31036503] [2021-11-07 01:52:18,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:52:18,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:52:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:52:18,023 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:19,626 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2021-11-07 01:52:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:52:19,629 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:52:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:19,630 INFO L225 Difference]: With dead ends: 176 [2021-11-07 01:52:19,630 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 01:52:19,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:52:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 01:52:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2021-11-07 01:52:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-11-07 01:52:19,649 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 44 [2021-11-07 01:52:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:19,649 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-11-07 01:52:19,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-11-07 01:52:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:52:19,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:19,652 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:19,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:19,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:20,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:20,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:20,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1719321434, now seen corresponding path program 1 times [2021-11-07 01:52:20,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:20,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320942490] [2021-11-07 01:52:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:20,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:20,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:20,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:52:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:20,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:20,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:20,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:20,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320942490] [2021-11-07 01:52:20,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320942490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:20,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839250602] [2021-11-07 01:52:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:20,986 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:20,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:20,990 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:20,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:52:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:21,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:21,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:21,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:21,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839250602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:21,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224054718] [2021-11-07 01:52:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:21,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:21,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:21,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 01:52:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:52:22,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:22,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:22,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224054718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:22,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:52:22,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-07 01:52:22,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989526118] [2021-11-07 01:52:22,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:52:22,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:52:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:52:22,610 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:22,791 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2021-11-07 01:52:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:52:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:52:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:22,799 INFO L225 Difference]: With dead ends: 203 [2021-11-07 01:52:22,800 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:52:22,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:52:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:52:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 108 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2021-11-07 01:52:22,826 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 44 [2021-11-07 01:52:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:22,827 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2021-11-07 01:52:22,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2021-11-07 01:52:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:52:22,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:22,833 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:22,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:23,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:23,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:23,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:23,446 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash 518117474, now seen corresponding path program 2 times [2021-11-07 01:52:23,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:23,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315757207] [2021-11-07 01:52:23,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:23,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:23,448 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:23,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:52:23,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:52:23,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:52:23,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:52:23,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:24,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:24,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:24,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315757207] [2021-11-07 01:52:24,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315757207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:24,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:52:24,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639063932] [2021-11-07 01:52:24,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:52:24,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:52:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:52:25,000 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:25,066 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-11-07 01:52:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:52:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:52:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:25,068 INFO L225 Difference]: With dead ends: 109 [2021-11-07 01:52:25,068 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 01:52:25,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 01:52:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-07 01:52:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2021-11-07 01:52:25,079 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 52 [2021-11-07 01:52:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:25,080 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2021-11-07 01:52:25,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2021-11-07 01:52:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:52:25,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:25,082 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:25,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:25,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:25,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:25,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash 744003709, now seen corresponding path program 1 times [2021-11-07 01:52:25,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:25,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61771322] [2021-11-07 01:52:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:25,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:25,304 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:25,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:52:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:25,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:52:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:25,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:26,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:26,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61771322] [2021-11-07 01:52:26,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61771322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:26,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1966971544] [2021-11-07 01:52:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:26,410 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:26,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:26,413 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:26,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:52:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:27,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:52:27,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:27,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:27,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1966971544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:27,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:52:27,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9, 9] total 23 [2021-11-07 01:52:27,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104050695] [2021-11-07 01:52:27,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:52:27,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:52:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:52:27,856 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:28,158 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-11-07 01:52:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:52:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:52:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:28,160 INFO L225 Difference]: With dead ends: 120 [2021-11-07 01:52:28,160 INFO L226 Difference]: Without dead ends: 86 [2021-11-07 01:52:28,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:52:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-07 01:52:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-07 01:52:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-11-07 01:52:28,169 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 57 [2021-11-07 01:52:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:28,170 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-11-07 01:52:28,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-11-07 01:52:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:52:28,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:28,172 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:28,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:28,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 01:52:28,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:28,576 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2070903995, now seen corresponding path program 1 times [2021-11-07 01:52:28,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:28,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7315554] [2021-11-07 01:52:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:28,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:28,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:28,579 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:28,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:52:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:29,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:52:29,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:29,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:29,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:29,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7315554] [2021-11-07 01:52:29,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7315554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:29,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364450457] [2021-11-07 01:52:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:29,588 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:29,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:29,588 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:29,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:52:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:30,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:52:30,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:30,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:30,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1364450457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:30,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895157944] [2021-11-07 01:52:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:30,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:30,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:30,734 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:30,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 01:52:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:31,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:52:31,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:32,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:52:32,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895157944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:32,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:52:32,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 31 [2021-11-07 01:52:32,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329141778] [2021-11-07 01:52:32,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 01:52:32,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 01:52:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:52:32,757 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:35,805 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2021-11-07 01:52:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 01:52:35,809 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:52:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:35,812 INFO L225 Difference]: With dead ends: 249 [2021-11-07 01:52:35,812 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 01:52:35,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:52:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 01:52:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 127. [2021-11-07 01:52:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.119047619047619) internal successors, (141), 126 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2021-11-07 01:52:35,835 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 59 [2021-11-07 01:52:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:35,835 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2021-11-07 01:52:35,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2021-11-07 01:52:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:52:35,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:35,841 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:35,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:36,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-07 01:52:36,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:52:36,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:36,454 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:52:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash -936146453, now seen corresponding path program 1 times [2021-11-07 01:52:36,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:36,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996356210] [2021-11-07 01:52:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:36,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:36,456 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:52:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:52:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:37,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:38,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:38,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996356210] [2021-11-07 01:52:38,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996356210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:38,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [604650017] [2021-11-07 01:52:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:38,244 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:38,249 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:38,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:52:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:39,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:52:39,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:39,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:52:39,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [604650017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:39,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446724891] [2021-11-07 01:52:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:39,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:39,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:39,661 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 01:52:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:40,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:52:40,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-07 01:52:41,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-07 01:52:43,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446724891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:43,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:52:43,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 10, 12] total 50 [2021-11-07 01:52:43,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806697526] [2021-11-07 01:52:43,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 01:52:43,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 01:52:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2097, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 01:52:43,234 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:04,904 INFO L93 Difference]: Finished difference Result 281 states and 325 transitions. [2021-11-07 01:53:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 01:53:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:53:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:04,907 INFO L225 Difference]: With dead ends: 281 [2021-11-07 01:53:04,908 INFO L226 Difference]: Without dead ends: 185 [2021-11-07 01:53:04,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=911, Invalid=4345, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 01:53:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-07 01:53:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2021-11-07 01:53:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.0925925925925926) internal successors, (177), 162 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2021-11-07 01:53:04,920 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 75 [2021-11-07 01:53:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:04,920 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2021-11-07 01:53:04,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2021-11-07 01:53:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:53:04,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:04,922 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:04,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:05,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:05,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:05,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:05,525 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:53:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1044420365, now seen corresponding path program 1 times [2021-11-07 01:53:05,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:05,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180403052] [2021-11-07 01:53:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:05,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:05,527 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:53:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:06,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:53:06,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:07,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:10,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:10,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180403052] [2021-11-07 01:53:10,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180403052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:10,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [724621032] [2021-11-07 01:53:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:10,415 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:53:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:53:10,421 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:53:10,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:53:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:11,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:53:11,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:11,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:12,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [724621032] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:12,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132189984] [2021-11-07 01:53:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:12,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:53:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:53:12,279 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:53:12,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:53:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:13,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:53:13,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:13,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132189984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:13,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:53:13,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 64 [2021-11-07 01:53:13,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647522987] [2021-11-07 01:53:13,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 01:53:13,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 01:53:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 01:53:13,918 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:29,627 INFO L93 Difference]: Finished difference Result 327 states and 386 transitions. [2021-11-07 01:53:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 01:53:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 01:53:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:29,642 INFO L225 Difference]: With dead ends: 327 [2021-11-07 01:53:29,643 INFO L226 Difference]: Without dead ends: 227 [2021-11-07 01:53:29,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 01:53:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-07 01:53:29,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-07 01:53:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0663716814159292) internal successors, (241), 226 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 241 transitions. [2021-11-07 01:53:29,660 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 241 transitions. Word has length 107 [2021-11-07 01:53:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:29,660 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 241 transitions. [2021-11-07 01:53:29,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.640625) internal successors, (169), 64 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 241 transitions. [2021-11-07 01:53:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 01:53:29,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:29,663 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:29,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:29,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:30,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:30,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:53:30,269 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:53:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1877293363, now seen corresponding path program 2 times [2021-11-07 01:53:30,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:30,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263249944] [2021-11-07 01:53:30,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:53:30,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:30,272 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:30,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:53:31,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:53:31,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:31,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 01:53:31,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:34,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:45,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:45,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263249944] [2021-11-07 01:53:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263249944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:45,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1431205524] [2021-11-07 01:53:45,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:53:45,242 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:53:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:53:45,242 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:53:45,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:53:46,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:53:46,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:46,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 01:53:46,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:47,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:48,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1431205524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:48,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969656715] [2021-11-07 01:53:48,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:53:48,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:53:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:53:48,015 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:53:48,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 01:53:49,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:53:49,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:49,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 01:53:49,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:49,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:53:50,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969656715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:50,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:53:50,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65, 65, 65, 65] total 128 [2021-11-07 01:53:50,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306262607] [2021-11-07 01:53:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-07 01:53:50,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-07 01:53:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2021-11-07 01:53:50,498 INFO L87 Difference]: Start difference. First operand 227 states and 241 transitions. Second operand has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:55:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:55:31,954 INFO L93 Difference]: Finished difference Result 455 states and 546 transitions. [2021-11-07 01:55:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-07 01:55:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-07 01:55:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:55:31,957 INFO L225 Difference]: With dead ends: 455 [2021-11-07 01:55:31,957 INFO L226 Difference]: Without dead ends: 355 [2021-11-07 01:55:31,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 100.8s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2021-11-07 01:55:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-07 01:55:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2021-11-07 01:55:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0423728813559323) internal successors, (369), 354 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:55:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 369 transitions. [2021-11-07 01:55:31,978 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 369 transitions. Word has length 171 [2021-11-07 01:55:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:55:31,978 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 369 transitions. [2021-11-07 01:55:31,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.3203125) internal successors, (297), 128 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:55:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 369 transitions. [2021-11-07 01:55:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-07 01:55:31,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:55:31,984 INFO L513 BasicCegarLoop]: trace histogram [126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:55:32,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:55:32,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:55:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 01:55:32,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:55:32,593 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:55:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:55:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 397747789, now seen corresponding path program 3 times [2021-11-07 01:55:32,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:55:32,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55761353] [2021-11-07 01:55:32,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:55:32,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:55:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:55:32,596 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:55:32,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb0729b7-7cba-4e56-ac01-46d7161622fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-07 01:55:33,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:55:33,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:55:33,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 01:55:33,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:55:34,005 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:55:34,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 01:55:44,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2021-11-07 01:55:47,169 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 01:55:47,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 33 [2021-11-07 01:55:48,598 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-11-07 01:55:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 54 [2021-11-07 01:55:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15876 trivial. 0 not checked. [2021-11-07 01:55:48,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:55:53,841 INFO L354 Elim1Store]: treesize reduction 73, result has 59.2 percent of original size [2021-11-07 01:55:53,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 487 treesize of output 380 [2021-11-07 01:55:54,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:55:54,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 436 treesize of output 472 [2021-11-07 01:55:54,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-07 01:55:59,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-07 01:56:00,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-07 01:56:00,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:56:00,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-11-07 01:56:01,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-07 02:04:31,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:04:31,709 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:31,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2021-11-07 02:04:33,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:33,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-11-07 02:04:34,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:04:34,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:04:37,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:37,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 57 [2021-11-07 02:04:39,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:39,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 02:04:42,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:42,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 02:04:45,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:45,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-11-07 02:04:52,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:04:52,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-11-07 02:04:53,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:04:54,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:05:22,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:05:22,938 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:05:22,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2021-11-07 02:05:25,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:05:25,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-11-07 02:05:25,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:05:26,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:05:29,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:05:29,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 57 [2021-11-07 02:05:31,964 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:05:31,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33